Hey alijayadv, welcome to PCMasters! (and sorry for the late answer)
If you still have warranty you should ask your retailer for a replacement board. Otherwise you can look on ebay for an ECS MCP61PM-GM, that's the board you are using right now.
If you want something "better" you should also look on ebay, because new AM2+ boards are getting rare. All you have to watch for is that it is made in µATX form factor. Also I would recommend something with an AMD chipset (760G, 770, 780G, 785G). But the only benefits will be more USB ports, better sound or something like that, because you won't find USB 3.0 on these mainboards.
I hope I could help you 🙂